The acute toxicity of Cr(VI) to the diatom Thalassiosira pseudonana (Hasle and Heimdal) clone 3H was determined in artificial media of 3.2 and 0.32 ppt salinity and with variations of sulfate concentration in the media independent of salinity. Inhibitory concentrations of Cr(VI) ranged from 6.6 μM for growth rate and 4.9 μM for cell yield at 3.2 ppt salinity and 2.8 μM sulfate to 0.04 μM for growth rate and 0.02 μM for cell yield at 0.32 ppt salinity and 0.019 mM sulfate. The inhibition by Cr(VI) was a function of the ratio of Cr(VI) to sulfate. Inhibition occurred when-this ratio exceeded about 500:1. It is suggested that the mechanism for the toxicity of Cr(VI) to diatoms and perhaps other aquatic organisms involves a site at which sulfate and chromate compete.
Member of
Contributors
Publisher
John Wiley & Sons, Inc.
Date Issued
1984
Note
Language
Type
Genre
Extent
6 p.
Subject (Topical)
Identifier
3327201
Additional Information
The acute toxicity of Cr(VI) to the diatom Thalassiosira pseudonana (Hasle and Heimdal) clone 3H was determined in artificial media of 3.2 and 0.32 ppt salinity and with variations of sulfate concentration in the media independent of salinity. Inhibitory concentrations of Cr(VI) ranged from 6.6 μM for growth rate and 4.9 μM for cell yield at 3.2 ppt salinity and 2.8 μM sulfate to 0.04 μM for growth rate and 0.02 μM for cell yield at 0.32 ppt salinity and 0.019 mM sulfate. The inhibition by Cr(VI) was a function of the ratio of Cr(VI) to sulfate. Inhibition occurred when-this ratio exceeded about 500:1. It is suggested that the mechanism for the toxicity of Cr(VI) to diatoms and perhaps other aquatic organisms involves a site at which sulfate and chromate compete.
This manuscript is an author version with the final publication available at http://www.wiley.com/WileyCDA/ and may be cited as: Riedel, G. F. (1984). Influence on salinity and sulfate on the toxicity of chromium (VI) to the estuarine diatom Thalassiosira pseudonana. Journal of Phycology, 20(4), 496-500. doi:10.1111/j.0022-3646.1984.00496.x
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution #373.
Date Backup
1984
Date Text
1984
DOI
10.1111/j.0022-3646.1984.00496.x
Date Issued (EDTF)
1984
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing11692", creator="creator:FAUDIG", creation_date="2011-12-15 12:53:29", modified_by="super:FAUDIG", modification_date="2014-02-12 13:20:11"
IID
FADT3327201
Issuance
single unit
Organizations
Attributed name: Harbor Branch Oceanographic Institute
Person Preferred Name
Riedel, G. F.
creator
Physical Description
6 p.
Title Plain
Influence on salinity and sulfate on the toxicity of chromium (VI) to the estuarine diatom Thalassiosira pseudonana
Origin Information
John Wiley & Sons, Inc.
1984
single unit
Title
Influence on salinity and sulfate on the toxicity of chromium (VI) to the estuarine diatom Thalassiosira pseudonana
Other Title Info
Influence on salinity and sulfate on the toxicity of chromium (VI) to the estuarine diatom Thalassiosira pseudonana